APA (7th ed.) Citation

Mackie, P., & Sim, F. (2007). Population downsizing. Public Health (Elsevier), 121(7), 489. https://doi.org/10.1016/j.puhe.2007.05.001

Chicago Style (17th ed.) Citation

Mackie, P., and F. Sim. "Population Downsizing." Public Health (Elsevier) 121, no. 7 (2007): 489. https://doi.org/10.1016/j.puhe.2007.05.001.

MLA (9th ed.) Citation

Mackie, P., and F. Sim. "Population Downsizing." Public Health (Elsevier), vol. 121, no. 7, 2007, p. 489, https://doi.org/10.1016/j.puhe.2007.05.001.